#include <stdio.h>

int main(void)
{
  int t_ct;
  double time;
  double x;
  int limit;

  printf("Enter the number of terms you want: \n");
  scanf("%d",&limit);
  for(time=0, x=1, t_ct=1;t_ct<=limit;t_ct++,x*=2.0)
  {
    time += 1.0/x;
    printf("time  = %f when terms = %d.\n", time, t_ct);
  }
  return 0;
}